Ro 3:20 Therefore by the deeds of the law no flesh will be justified in His sight, for by the law is the knowledge of sin.Rom 3:4 By no means! Let God be true though every one were a liar, as it is written, "That you may be justified in your words, and prevail when you are judged."
Rom 3:5 But if our unrighteousness serves to show the righteousness of God, what shall we say? That God is unrighteous to inflict wrath on us? (I speak in a human way.)
Rom 3:6 By no means! For then how could God judge the world?
Rom 3:7 But if through my lie God's truth abounds to his glory, why am I still being condemned as a sinner?
Rom 3:8 And why not do evil that good may come?--as some people slanderously charge us with saying. Their condemnation is just.
The Apostles were being slandered as telling people it is OK to do evil so that good may come out of it, which is totally false!!
There were people who thought since God is glorified because he shows his mercy and grace on those who do not deserve it, then why not go all out and do evil so that good may come.
If we do evil and lie so that God is glorified through our lie how then God going to be able to judge the world when are doing the same thing?
21 But now the righteousness of God apart from the law is revealed, being witnessed by the Law and the Prophets